Relaxation dynamics of photocarriers in one-dimensional mott insulators coupled to phonons

Hiroaki Matsueda, Shigetoshi Sota, Takami Tohyama, Sadamichi Maekawa

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We examine recombination processes of photocarriers in one-dimensional Mott insulators coupled to phonons. Performing density matrix renormalization group calculations, we find that, even for small electron-phonon coupling, many phonons are generated dynamically, which cause initial relaxation process after the irradiation. At the same time, spin-charge coupling coming from mixing of high- and low-energy states by the irradiation is suppressed. We discuss differences between Mott and band insulators in terms of relaxation dynamics.

Original languageEnglish
Article number13701
Journaljournal of the physical society of japan
Volume81
Issue number1
DOIs
Publication statusPublished - 2012 Jan 1
Externally publishedYes

Keywords

  • Density matrix renormalization group method
  • Photoinduced phase transition
  • Pump-probe reflection spectroscopy
  • Strongly correlated electron systems

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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